Vehicle Door Unlocking With Server-Issued One-Time Mobile Keys
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Solution Overview
Problem
Existing mobile key technologies require installation of a receiving device in vehicles, leading to increased manufacturing and installation costs, and security issues arise due to non-disposable key codes that can be shared and reused.
Innovation Solution
A method utilizing a mobile key management server to authenticate users and vehicles, generate a unique mobile key issuance algorithm, and issue disposable mobile keys for unlocking vehicle doors, eliminating the need for a receiving device and enhancing security through one-time use codes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a receiver for receiving mobile key code is installed in the vehicle, then the mobile key function can be implemented, but the manufacturing and installation cost increases and the door configuration becomes complicated
Solution Approach 1:
The patent extracts the key code verification function from the vehicle side and relocates it to the server side. The vehicle no longer needs a receiver to obtain and verify the mobile key code, as the server performs the authentication remotely. This eliminates the need for additional hardware in the vehicle's door configuration.
Solution Approach 2:
The patent introduces a server as an intermediary between the mobile terminal and the vehicle. The server receives the mobile key code from the mobile terminal, verifies it against the registered key code, and then communicates with the vehicle to control door locking. This intermediary approach eliminates the need for direct peer-to-peer communication hardware in the vehicle.
2Ease of manufacture
If a fixed mobile key code is used, then the mobile key function is simple to implement, but the security performance deteriorates due to reusable codes that can be shared with third parties
Solution Approach 1:
The patent transforms the static, fixed mobile key code into a dynamic, time-varying code. The mobile key code changes with each authentication request and is valid only for a specific time period. This dynamic approach maintains ease of implementation through server-side management while dramatically improving security by preventing code reuse and unauthorized sharing.
Solution Approach 2:
The patent changes the parameters of the mobile key code from fixed to variable, incorporating time validity and expiration mechanisms. The key code is no longer a static value but a dynamic parameter that changes based on authentication requests and time, enhancing security while maintaining system simplicity through centralized server management.
Data Source
AI summary
The present invention provides a method for unlocking a vehicle door using a mobile terminal. The unlocking method comprises: authenticating, by a mobile key management server, a user and a smartphone of the user; authenticating, by the mobile key management server, a vehicle having a door to be unlocked using the authenticated smartphone; generating, by the mobile key management server, a mobile key issuance algorithm corresponding to the authenticated vehicle and smartphone; issuing, by the mobile key management server, a mobile key, using the generated mobile key issuance algorithm, in response to a request from the smartphone; receiving, at the mobile key management server, the issued mobile key via the smartphone and the vehicle; confirming, by the mobile key management server, whether the issued mobile key matches the received mobile key; and requesting, by the mobile key management server, the vehicle to unlock the door thereof, when the issued mobile key matches the received mobile key.